Intel Core Ultra 5 225T vs Intel Core Ultra 5 245KF Comparison

Where Each One Wins

The benchmark data is decisively one-sided. Across all 17 recorded head-to-head tests, the Intel Core Ultra 5 245KF wins every single matchup. The Intel Core Ultra 5 225T does not record a single victory in any workload category, whether single-threaded, multi-threaded, or specialized instruction tests.

The largest gaps appear in heavily parallel workloads. The 245KF leads by 49.1% in data compression, 47.9% in random string sorting, and 47% in extended instructions. These are tasks that scale with core count and thread count, where the 245KF's additional four cores and four threads provide a clear structural advantage.

The narrowest margin is in single-thread performance. The 245KF leads by only 7.8% in PassMark single-thread and single-threaded tests. This smaller gap reflects the architectural similarity between the two processors: both use the same Arrow Lake design and the same 3 nm TSMC process node. The 245KF's higher boost clock, 5.20 GHz versus 4.90 GHz, explains most of this single-thread advantage.

In Cinebench tests, the deltas are remarkably consistent. All six Cinebench R15, R20, and R23 results show either a 40% or 40.1% deficit for the 225T. This uniformity suggests the performance difference is primarily resource-driven rather than workload-specific. The 225T is not losing because of an architectural inefficiency; it is losing because it has fewer cores and lower clock speeds.

The 245KF also holds advantages in PassMark integer math (39.8%), floating-point math (37.1%), and multithreaded performance (41.2%). Physics simulation shows a 31.5% gap, while prime number finding shows the smallest multi-threaded deficit at 31.7%. Data encryption sits at 45.2%, meaning the 245KF processes encrypted data substantially faster.

Architecture Differences

Both processors belong to the same Core Ultra Series 2 family, use the Arrow Lake architecture, and share the Arrow Lake-S codename. They are built on the same 3 nm process node at TSMC, with identical transistor counts of 17,800 million and identical die sizes of 243 mm². Both use the Intel Socket 1851, support DDR5 memory in a dual-channel configuration, and provide the same memory bandwidth of 102.4 GB/s. PCIe support is identical: Gen 5 with 20 lanes from the CPU only. Neither supports ECC memory.

The core configurations differ significantly. The 225T has 10 cores and 10 threads, while the 245KF has 14 cores and 14 threads. Neither processor implements simultaneous multithreading, so threads equal cores in both cases. The 245KF's four additional cores account for the bulk of its multi-threaded benchmark advantage.

Clock speeds also diverge. The 225T has a base clock of 2.50 GHz and a boost clock of 4.90 GHz. The 245KF runs at 4.20 GHz base and 5.20 GHz boost. The 245KF's higher base clock, a 1.70 GHz difference, is particularly relevant for sustained workloads that do not reach boost conditions. The boost clock advantage is 0.30 GHz.

Cache allocations differ as well. Both have 192 KB of L1 cache per core and 3 MB of L2 cache per core. The shared L3 cache is 20 MB on the 225T and 24 MB on the 245KF. The additional 4 MB of L3 cache on the 245KF provides more headroom for data reuse across the larger core count.

Thermal design power differs substantially. The 225T carries a 65 W TDP, while the 245KF is rated at 125 W. This 60 W difference reflects the 245KF's higher clocks and additional cores, and it also indicates the 225T is designed for more thermally constrained systems.

The integrated graphics situation differs. The 225T includes Arc Xe-LPG Graphics with 16 execution units. The 245KF has no integrated graphics at all, indicated as N/A. This makes the 225T the only one of the two that can output video without a discrete graphics card.

The 245KF has an unlocked multiplier, meaning it supports overclocking, while the 225T does not. The 245KF also has a known part number, SRQCY, while the 225T's part number is listed as unknown. Release dates differ by roughly two months: the 245KF launched on October 23, 2024, and the 225T on December 31, 2024.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 5 245KF has 14 cores and 14 threads. The Intel Core Ultra 5 225T has 10 cores and 10 threads. Neither supports simultaneous multithreading, so the thread count equals the core count for both.

Q: How large is the performance gap in single-threaded workloads?

A: The 245KF leads by 7.8% in both PassMark single-thread and single-threaded tests. In Cinebench R23 single-core, the 245KF scores 5173 versus 3101 for the 225T, a 40.1% difference. The PassMark gap is smaller because that test measures a broader set of single-thread operations.

Q: Do both processors support the same memory and expansion?

A: Yes. Both support DDR5 memory in a dual-channel configuration with 102.4 GB/s bandwidth. Both provide PCIe Gen 5 with 20 lanes from the CPU only. Neither supports ECC memory.

Q: Does either processor include integrated graphics?

A: Only the 225T includes integrated graphics, specifically Arc Xe-LPG Graphics with 16 execution units. The 245KF has no integrated graphics (listed as N/A), so it requires a discrete GPU for display output.

Q: Are both processors built on the same manufacturing process?

A: Yes. Both use the 3 nm process node from TSMC, with the same transistor count of 17,800 million and the same die size of 243 mm². They also share the same Arrow Lake architecture and Arrow Lake-S codename.

Q: Which processor supports overclocking?

A: The 245KF has an unlocked multiplier and supports overclocking. The 225T does not have an unlocked multiplier, so its clock speeds are fixed.

Specification Differences

The two processors differ in several specification fields. Core count is 10 for the 225T versus 14 for the 245KF. Thread count follows the same pattern: 10 versus 14. Base clock is 2.50 GHz for the 225T and 4.20 GHz for the 245KF. Boost clock is 4.90 GHz versus 5.20 GHz. TDP is 65 W for the 225T and 125 W for the 245KF.

L3 cache is 20 MB shared on the 225T and 24 MB shared on the 245KF. L1 and L2 caches are identical per core at 192 KB and 3 MB respectively. Integrated graphics are present on the 225T (Arc Xe-LPG Graphics 16EU) and absent on the 245KF. The multiplier is locked on the 225T and unlocked on the 245KF. The part number is unknown for the 225T and SRQCY for the 245KF.

Release dates differ. The 245KF launched on October 23, 2024, and the 225T launched on December 31, 2024. The 245KF has a launch MSRP of $294. The 225T has no recorded launch MSRP.

Identical specifications include socket (Intel Socket 1851), architecture (Arrow Lake), codename (Arrow Lake-S), generation (Ultra 5, Arrow Lake), process node (3 nm), foundry (TSMC), transistors (17,800 million), die size (243 mm²), L1 cache per core (192 KB), L2 cache per core (3 MB), memory support (DDR5), memory bus (Dual-channel), memory bandwidth (102.4 GB/s), ECC memory support (false), PCIe version and lanes (Gen 5, 20 lanes CPU only), market segment (Desktop), and production status (Active).

Head-to-Head Benchmarks

The Cinebench results show a consistent pattern. In Cinebench R15 multi-core, the 225T scores 2214 against 3693 for the 245KF, a 40% deficit. In R15 single-core, the gap is 40.1% with scores of 312 and 521. Cinebench R20 multi-core shows 9227 versus 15391, again 40%. R20 single-core is 1302 versus 2172, a 40.1% gap. Cinebench R23 multi-core delivers 21971 against 36647, 40%. R23 single-core is 3101 versus 5173, 40.1%.

The PassMark suite reveals where the 245KF's advantages are largest and smallest. Data compression shows the biggest gap: 233998 for the 225T versus 460123 for the 245KF, a 49.1% difference. Random string sorting is close behind at 47.9%, with scores of 28774 and 55206. Extended instructions show a 47% gap, with 20083 versus 37912.

Data encryption has a 45.2% gap, with 18289 versus 33381. Multithreaded performance is 41.2% apart, with 25358 versus 43110. Integer math shows a 39.8% gap, with 59543 versus 98854. Floating-point math is 37.1% apart, with 82751 versus 131546.

Physics simulation shows a 31.5% gap, with 2053 versus 2998. Prime number finding has a 31.7% gap, with 284 versus 416. The smallest gap is in single-thread performance at 7.8%, with scores of 4348 versus 4715 in both the PassMark single-thread and single-threaded tests.

The overall average benchmark score confirms the hierarchy. The 225T has an average benchmark score of 30468, placing it in the 82nd percentile among all CPUs. The 245KF has an average benchmark score of 55093, placing it in the 91st percentile.

The 225T's nearest rivals are all mobile or lower-power desktop chips. It sits within 0.3% of the AMD Ryzen 5 7640HS and AMD Ryzen 7 7736U, and within 0.2% of the Intel Core i9-11980HK. The Intel Core i5-13600H is 0.3% faster on average. This positions the 225T as a mid-range desktop part in a field dominated by laptop processors.

The 245KF's nearest rivals are substantially higher-end. It trails the Intel Core 7 253PQE by 1.5% and the Intel Core i9-14900HX by 1.6%. It leads the AMD Ryzen 9 9900X3D by 0.6% and the Intel Core Ultra 5 245K by 1.9%. This places the 245KF in the upper tier of desktop performance, competing with flagship mobile and high-end desktop parts.

The Verdict

The recorded data leaves no ambiguity. The Intel Core Ultra 5 245KF is the superior processor in every measured benchmark. Its 14 cores, 4.20 GHz base clock, 5.20 GHz boost clock, and 24 MB L3 cache deliver advantages that range from 7.8% in single-threaded tests to 49.1% in data compression. It also holds a 91st percentile ranking versus the 225T's 82nd percentile.

The 225T is not without its reasons to exist. It consumes 65 W versus 125 W, making it suitable for systems with tighter thermal budgets. It includes integrated graphics, allowing display output without a discrete GPU. Its 10 cores and 4.90 GHz boost clock still deliver respectable performance, as shown by its average benchmark score of 30468, which places it near mobile chips like the AMD Ryzen 5 7640HS and Intel Core i5-13600H.

The 245KF, however, is the choice for anyone who needs maximum throughput. Its average benchmark score of 55093 is roughly 81% higher than the 225T's average. It leads the AMD Ryzen 9 9900X3D in average score, and it trails only a few high-end parts like the Intel Core i9-14900HX. Its unlocked multiplier adds overclocking headroom that the 225T cannot match. The lack of integrated graphics is a trade-off, but for systems that already include a discrete GPU, this is not a functional limitation.

The launch MSRP of $294 for the 245KF, combined with its benchmark dominance, indicates it is positioned as the higher-tier part in this pairing. The 225T's role is as a lower-power, graphics-integrated alternative for builds where the 125 W TDP and discrete-GPU requirement of the 245KF are not acceptable.

For workloads that stress multiple cores, such as rendering, compression, encryption, and scientific computation, the 245KF is the clear winner. The data shows a 40% or greater advantage across all Cinebench multi-core tests and a 41.2% advantage in PassMark multithreaded performance. For single-threaded responsiveness, the 245KF still leads, though by a narrower 7.8% margin. The 225T's only unique advantages are its lower TDP and its integrated graphics, neither of which appears in benchmark scores.